Roborock Saros Z70: The Robot Vacuum That Actually Picks Up Your Socks

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1. Introduction – The Future of Robot Vacuums

For years, robot vacuums have had one fundamental limitation: they could only clean around the mess, never through it. Drop a sock on the floor, leave a crumpled tissue by the couch, or kick off your sandals in the hallway — and your robot vacuum would either bump into these things or politely navigate around them, leaving entire patches of floor untouched.

The Roborock Saros Z70 changes that entirely.

Introduced as the first mass-produced robotic vacuum with a foldable five-axis mechanical arm, the Saros Z70 represents an entirely new category of home cleaning device. It doesn’t just vacuum. It picks things up. It moves obstacles. It organizes small household items. And it does all of this while also mopping your floors, mapping your home in extraordinary detail, and returning to its dock for a thorough self-cleaning session when it’s done.

This is not a concept product or a lab prototype. The Roborock Saros Z70 is a real, commercially available device that you can buy today — and it marks the beginning of something genuinely exciting in home automation. Let’s take a close look at what makes it so special.

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2. Why Roborock Saros Z70 Is Different

Most premium robot vacuums in 2025 offer similar features: strong suction, mopping capability, obstacle avoidance, automatic docking, and self-cleaning stations. The competition between top brands has gotten fierce, and improvements have become increasingly incremental — a little more suction here, a slightly thinner body there.

The Roborock Saros Z70 breaks that pattern in a dramatic way with one addition: a mechanical robotic arm built directly into the body of the vacuum.

The OmniGrip arm moves obstacles, lifts objects, and even organizes small household items like socks and tissues. Equipped with dual cameras, LED lighting, and precision sensors, it ensures accurate object handling.

Think about what this means in practice. Instead of mapping around that sock on the floor, the Saros Z70 identifies it, grabs it with its arm, moves it to a spot you’ve designated in the app, and then goes back to clean the area where the sock was lying. Your floors get genuinely clean — not just the parts that were already clear.

At CES 2025, Roborock announced its Saros series of robotic vacuums, marking a significant step in automation with the introduction of the Saros Z70. This model is the first mass-produced robotic vacuum equipped with a five-axis mechanical arm. The announcement generated enormous excitement among tech enthusiasts and home automation fans, and the device has lived up to a great deal of that buzz.

The Saros Z70 is a premium product — priced at $1,999.99 — and it justifies that price tag with a combination of features that simply doesn’t exist anywhere else in the market right now.

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3. OmniGrip Technology Explained

The heart of the Saros Z70’s innovation is the OmniGrip mechanical arm, and understanding how it works helps explain both its capabilities and its current limitations.

The Saros Z70 comes with the industry-leading retractable 5-axis robotic arm module. The robotic arm retracts to its compartment when idle and extends during cleaning, helping the robot clean the floor and tidy up items on the floor. When the arm is not in use, it folds neatly inside the robot’s body, which is part of what makes the engineering so remarkable — the entire arm system takes up only about 10% of the space of earlier prototype models.

At the core of OmniGrip is a system combining pressure sensors and computer vision. The robotic arm uses an RGB camera to visually identify objects and assess their size, shape, and position. Pressure sensors ensure the grip strength is appropriate, avoiding damage to objects. The LED light aids the arm’s operation by providing consistent illumination, which is meant to help the Saros Z70 recognize objects even in dimly lit environments.

OmniGrip is equipped with precision sensors, a camera, and an LED light, enabling it to determine its position, surroundings, and the weight of each object it grips. This ensures the mechanical arm operates with exceptional accuracy.

Safety was clearly a top priority during the design of this system. The Saros Z70 is designed with multiple safety protection devices and mechanisms to prevent the moving robotic arm from injuring users, children, and pets. These include a robotic arm switch to disable the arm when not needed, an emergency stop button, a pressure switch and anti-pinch sensor, collision sensing, and grip force restrictions.

OmniGrip features are disabled by default and can be activated by users based on their specific needs. This is a thoughtful design choice — it means new users won’t be surprised by a robot arm suddenly swinging into action on day one. You enable it when you’re ready, configure the drop zones in the app, and let the system learn your home.

Here is a quick technical overview of the OmniGrip arm:

4. Robot That Picks Up Socks and Objects

This is the feature that captured the imagination of consumers and tech media alike — and for good reason. The idea of a robot vacuum that actually picks up socks off the floor feels like science fiction, but here we are.

During its first cleaning session, the Saros Z70 detects and marks objects it can lift, then circles back to clean missed areas in the second session. This two-pass strategy is elegant: the robot isn’t trying to do everything at once. It surveys, identifies, moves, and then cleans. The result is a much more thorough clean than any robot vacuum has been able to deliver before.

Current recognizable and organizable objects include socks, sandals, crumpled tissues, and towels under 300g. New items will be added continually via firmware OTA updates.

The sorting functionality is one of the most genuinely useful aspects of this system. The Saros Z70 identifies and relocates household items to their designated spots, as programmed in its software — socks toward the closet, sandals toward the entrance rug, crumpled tissues toward the Store Box. You define these destination zones in the Roborock app, and the robot learns where things belong in your home.

In addition to the 108 objects pre-programmed into the robotic vacuum, the Saros Z70 utilizes customizable AI-driven recognition technology, empowering users to define and label up to 50 new objects in the app for personalized interaction and enhanced functionality.

It’s worth setting realistic expectations, though. The robotic arm worked only about half the time in independent tests, and the three categories the arm currently operates with are clumps, fabrics, and shoes. The technology is genuinely exciting but still maturing. Roborock has committed to expanding the list of recognized objects through regular over-the-air software updates, meaning the device will keep getting smarter over time without any hardware changes.

For early adopters, the experience is thrilling. For buyers who want a polished, reliable object-handling system right now, it’s worth understanding that this is first-generation technology — impressive, but with room to grow.

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5. AI Navigation and Object Detection

A robot that picks up objects needs to be exceptional at understanding its environment — and the Saros Z70 absolutely delivers on this front.

The Saros Z70 features StarSight 2.0 navigation system, an upgrade of Roborock’s StarSight dual-transmitter 3D Time-of-Flight technology. StarSight 2.0 is designed to create detailed spatial awareness with more than 21,600 data points at a frequency of 38,400 Hz. This is a genuinely remarkable amount of environmental data, and it gives the robot an unusually detailed picture of the space around it.

The Saros Z70 features the advanced StarSight Autonomous System 2.0, providing smart navigation and obstacle avoidance. Its VertiBeam Lateral Obstacle Avoidance technology enables the robot to accurately detect and navigate around obstacles like furniture legs, cables, and up to 108 other types of obstacles.

Independent testing confirmed the quality of this system. In obstacle avoidance evaluations, the Saros Z70 scored 22 out of 24 — significantly higher than the average score of 16.6.

The combination of the front camera, the arm-mounted camera, and the StarSight 2.0 system means the Saros Z70 has a far richer understanding of your home than almost any other robot vacuum on the market. It can detect objects as small as 2cm wide and 2cm tall, navigate around furniture legs and cable clusters, and even recognize pets — pausing its brush and reducing noise when it detects your cat or dog nearby.

The Roborock SmartPlan 2.0 feature provides truly automated cleaning. All you need is a single tap in the app, and the robot automatically adjusts its settings based on AI-analyzed environments and cleaning history. It boosts suction and water volume for areas that need extra attention, reduces power during do-not-disturb hours, and cleans its mops after tackling bathrooms and kitchens.

This level of contextual intelligence is what separates the Saros Z70 from the generation of robot vacuums that came before it. It’s not just following a map — it’s actually understanding your home.

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6. Powerful Cleaning Performance

All the robotic arm innovation in the world wouldn’t matter if the Saros Z70 wasn’t also a great vacuum cleaner. Fortunately, it is — with some nuance worth noting.

The Saros Z70’s dual all-rubber brush design and 22,000 Pa HyperForce suction power makes it a formidable cleaning machine, effortlessly lifting dirt, hair, and debris across surfaces like hardwood, tile, and carpets.

The FlexiArm technology empowers double robotic arms for the side brush and the mop to expertly sweep dirt from corners, edges, and under furniture. It ensures complete cleaning coverage, leaving no blind spots behind for a truly thorough home clean. Hot water mopping accelerates the breakdown of tough stains, and the integrated water tank ensures the mop stays damp, preventing it from drying out.

Independent testing found the Saros Z70’s combined mopping score to be exceptional — better than the Saros 10R and above the average robot vacuum mop combo evaluated. For everyday hard floor cleaning, this robot performs at the very top of the category.

Here is a summary of the core cleaning specifications:

One note for carpet owners: independent testing found the Saros Z70 scored below average in carpet deep clean evaluations involving embedded debris such as sand. The robot shines on hard floors, but if deep carpet cleaning is your primary concern, this is worth keeping in mind.

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7. Smart Home Integration

The Roborock Saros Z70 was built for the modern smart home, and its integration options reflect that philosophy thoroughly.

The Saros Z70 is compatible with Google Assistant and Amazon Alexa, allowing you to easily control the robot vacuum cleaner with voice commands. This means you can pause cleaning, start a session, or send the robot back to its dock without touching your phone.

By simply saying “Hello Rocky,” you can kick off cleaning tasks and unlock more capabilities. This built-in voice assistant is always ready to help, with no network connection required. This is a particularly useful feature for situations where your Wi-Fi might be temporarily unavailable — the robot remains responsive and functional.

The Roborock app itself is one of the most capable in the industry. The app includes its own virtual assistant feature called SmartPlan 2.0, which adapts to your home’s environment, plus control over almost all robot vacuum and auto-empty bin systems, multiple floor plans, virtual barriers, and a full range of pet-related features — including video call and Cruise mode to check on pets.

The dual camera system adds another layer of smart home functionality. The Saros Z70 is designed with dual cameras: one on the mechanical arm and one at the front of the vacuum. This design enhances accuracy when gripping objects and provides the convenience of camera switching, allowing you to get a higher view of your home environment.

Pet owners will appreciate the Video Call and Cruise feature to check on pets, the ability to schedule on-demand cruises, or manually control patrols with just a tap. The Pet and Pet Area Recognition feature pauses the main brush and moves aside to avoid frightening pets, while boosting suction around pet areas for a thorough clean.

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8. Multi-Function Dock and Maintenance

The Saros Z70’s dock is as impressive as the robot itself. It’s not just a charging station — it’s a comprehensive maintenance hub that handles most of the routine upkeep automatically.

The Multifunctional Dock 4.0 is a 10-in-1 system offering features like auto mop removal, enabling quick mapping, pure vacuuming, and sweep-then-mop modes. It uses 176°F hot water for mop washing and 131°F hot air drying, ensuring the mop stays clean and dry. The dock also offers 60-day automatic dust collection, auto tank refilling, auto detergent dispenser, and 176°F hot water dock self-cleaning, contributing to a hands-free cleaning experience.

The RockDock Ultra 2.0 uses adaptive water temperatures to tackle stains, preventing starch-based stickiness, melting oil stains, and sterilizing at high temperatures to remove 99.99% of Staphylococcus aureus and Escherichia coli from the mop after self-cleaning, based on testing carried out by TÜV Rheinland.

Battery management is handled intelligently as well. The RockDock Ultra 2.0 fully powers the 6,400 mAh battery in just 150 minutes. The dock intelligently adjusts the charge needed based on the remaining area, so you don’t need to wait until it’s fully charged.

The dock also includes Auto Mop Removal, a function activated through the app that detaches the mop when the robot is set to vacuum only or to prioritize carpet cleaning, preventing dampness on carpets.

The result is a system that can genuinely run for days — or even weeks — without requiring meaningful human intervention. You set it up, configure your preferences in the app, and let the robot handle the rest.

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9. Roborock Saros Z70 Review – Real Experience

So what’s it actually like to live with the Roborock Saros Z70? Based on both official information and independent evaluations, the picture is nuanced but overall very positive.

The cleaning performance on hard floors is outstanding. The Roborock Saros Z70 earned the Most Innovative award for Mid-2025 thanks to its groundbreaking OmniGrip mechanical arm — the first of its kind to autonomously stow small objects into a user-defined compartment — alongside industry-leading mopping performance and near-flawless 3D Time-of-Flight obstacle avoidance.

The mopping results were particularly impressive. The dock empties the robot’s dust bin into a 2.7 L disposable bag and uses 176°F hot water to wash the mop pads and self-clean the bin. It also dries the mop pads for a more sanitary experience and includes a detergent reservoir, which functioned well in evaluations.

The OmniGrip arm is genuinely exciting but still evolving. The arm worked approximately half the time in independent tests, and the currently recognized object categories — clumps, fabrics, and shoes — are limited. Roborock has been transparent about this, positioning the arm as a feature that will improve continuously through software updates.

The robot is an excellent choice for tech enthusiasts, early adopters, households with hard flooring, and anyone who wants a genuinely hands-free cleaning system. It’s less ideal for people who primarily need deep carpet cleaning or those who want every feature to work flawlessly from day one.

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10. Final Thoughts – The Next Generation of Cleaning Robots

The Roborock Saros Z70 is not just a robot vacuum. It is a preview of what home robotics will look like over the next decade.

The idea that a device rolling around your living room can identify a sock, pick it up, carry it to your designated drawer area, set it down gently, and then return to clean the spot where it was sitting — that is not a minor feature update. That is a genuine leap forward in what we expect machines to do for us at home.

Robotic arms have been widely used in industries like manufacturing, medicine, and automated kitchens. But robotic arms in consumer goods — intended for use in an unpredictable, domestic setting — have had very few applications outside of hobbyists and educators. Integrating a robotic arm into a consumer product like the Saros Z70 is ambitious and complex.

Roborock has managed it, and the result is a device that earns genuine admiration — both for what it does today and for what it promises to do tomorrow. With the Saros Z70, Roborock describes the robot as your home helper, companion, and assistant — whatever you need it to be.

The OmniGrip arm will get smarter with every software update. The list of recognizable objects will grow. The success rate of pick-ups will improve. And the broader Saros platform will continue to evolve as Roborock builds on this foundation.

If you’re the type of person who wants to be at the forefront of home technology — and you have hardwood or tile floors that would benefit from a truly world-class cleaning system — the Roborock Saros Z70 is one of the most exciting purchases you can make right now.

Welcome to the new era of cleaning robots.

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Quick Specs Summary

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Review 1

Great article about the Roborock Saros Z70! I had no idea a robot vacuum could actually pick up socks from the floor. The explanation of the robotic arm and AI navigation was clear and easy to understand. I also liked the real photos showing the device in action. BestChinaGadget is becoming one of my favorite places to discover new Chinese tech before it becomes mainstream.

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Review 2

Very interesting post. The Roborock Saros Z70 looks like a big step forward for smart home technology. A robot vacuum that can move objects while cleaning is something I’ve been waiting for. The article on BestChinaGadget explains the features well and gives a good overview of how the OmniGrip arm works. I’m definitely following the site for more gadget news.

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Review 3

I really enjoyed reading this review on BestChinaGadget. The Roborock Saros Z70 sounds like a futuristic device — especially the part where it can detect and pick up socks during cleaning. The post is informative and straight to the point, with useful details about the technology. Looking forward to more posts about innovative Chinese gadgets like this one.

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